Early one school morning, a boy named Cameron walks into Ms. Perky's office. Cameron is a new student. All of a sudden, you see some sort of poop thrown onto her window from a student. All you see in the background is the sky. Then later Kat comes in, clearly in the background (out the window) there are some stadium lights! They weren't there before! Did the school change locations?

I went to the school that 10 Things I Hate About You was filmed at... I was a junior when the movie was filmed, and I can assure you that the school did not switch locations. The office overlooks a large football field known as "the bowl". It's always been there, and still is.

watch the movie again, the lights are always there. Sometimes the angles change and show the other window in the office, but the lights are always there. Think about the fact that the building is on a hill and the staduim is way down below. Look at the end credits when Letters To Cleo is singing on the roof. You can see the lights there, and see why you may have thought the lights weren't there.